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(No Model.) 2 Sheets-Sheet 1.

H. P. GRAND'ALL & E. J. BIRKETT. DRIVING CONNECTION FOR HARVESTERS.

No. 568,893. Patented 0ct'. 6,, 1896.

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H. RORANDALLBv E}. J. BIRKETT. DRIVING CONNECTION FOR HARVBS TERS.

No. 568,893. Patented Oct. 6, 1896,

Witnesses:

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UNITED STATES PATENT -OFFICE.

HENRY F. CRANDALL AND EDWARD J. BIRKETT, OF MILYVAUKEE, VISCON- SIN, ASSIGNORS TO THE MlLlVAUKEE HARVESTER COMPANY, OF SAME PLACE.

DRIVING CONNECTION FOR HARVESTERS.

SPECIFICATION formingpart of Letters Patent No. 568,893, dated October 6, 1896.

Application filed September 30, 1895. Serial No. 564,137. (No model.)

T0 to whom it may concern.-

Be it known that we, HENRY F. CRANDALL and EDWARD J. BIEKETT, of Milwaukee, in the county-of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Driving Connections for Harvesters; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Our invention relates particularly to that class of harvesters in which the elevator is open at the rear end, so as to allow long grain to project therefrom. Its object is to avoid obstruction to the passsage of long grain up the elevator and interference with the driving connections of the conveyer and elevatorbelts by the projection and passage of such grain.

It consists in certain novel features in the construction and arrangement of the driving connections of the harvester mechanism, particularly of the conveyer and elevator belts, as hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings like letters designate the same parts in both figures.

Figure 1 is a plan view of a harvester embodying our invention, the binder and elevator being removed, with the exception of the lower roller of the lower elevator-belt;

and Fig. 2 isa rear elevation of the machine, certain parts thereof being broken away.

A designates the main frame of the machine; B, the main wheel; 0, the platform conveyer; D, the elevator, the rear end of which is open between the elevator-belts and, in the present case, normally closed by a door d, which is adapted to be swung rearwardly and upwardly by the passage of long grain.

c is the inner roller of the platform conveyer, and d is the lower roller of the lower elevator-belt. The shafts of these rollersare extended at their rear ends and provided with spur-gears c and d respectively. Between and parallel with said shafts is a short shaft 6, carried in a frame or gear-case E, secured to the rear sill of the main frame. This shaftis provided with a spur-gear e, which meshes on opposite sides with the gears c and d respectivel y. It is also provided with a bevel-gear which meshes with a similar gear f on a shaft F, which is arranged lengthwise of the machine in front of and below the rear sill of the main frame.

G is the main driving-shaft, located behind and parallel with the axle of the main wheel, from which it is driven through a sprocketwheel I), attached to the main wheel and a chain belt connecting it with a sprocket-wheel g on said shaft G. At one end the shaft G is provided with an internal bevel-gear g, which meshes with a pinion f on shaft F. At the other end the shaft G is provided with a bevelgear g which meshes with a similar gear h on the crank-shaft H, which is supported across and parallel with the outer end of the jection of such grain from the conveyer and.

elevator is avoided.

It will be observed that all the driving connections between the main wheel and the platform conveyer and the lower end of the lower elevator-belt are arranged in front of the rear sill of the main frame and below the opening in the rear end of the elevator. The space between the rear side of the platform conveyer O and the rear sill of the frame is closed by a deck or shield I, which projects over and covers the gears contained in the frame or case E.

The upper elevator-belt may be driven in the usual or any suitable manner from the lower belt at the front end of the elevator, but as this does not constitute a part of our invention it is not necessary to show or described the driving connection.

Heretofore in this class of machines it has been customary to drive the platform conveyer from the inner end by a chain belt passing over a sprocket-wheel on the shaft of the upper roller of the lower elevator-belt, thence downwardly over a sprocket-wheel on the shaft of the lower roller of said belt or of the inner roller of the platform conveyer. W'ith elevators open at the rear end this arrange-- ment of the driving mechanism is objectionable because the chain belt and the sprocketwheel over which it runs at the lower end of the elevator project into the path of long grain and not only interfere with its passage, but become entangled therewith, thus interfering with their free and proper operation. The vibration of the belt also beats the heads of long grain projecting into its path, thus tending to thresh and Waste it. These objections are entirely obviated by our improved driving connections, which, furthermore, admit of a more direct and convenient attachment of the seat-support J to the rear sill of the frame without bending it underneath the sprocket-wheel usually located at this point.

The gear-case E is formed With a seat or plate e for the support, J, and with it and a cap-plate e is bolted to the rear sill of frame A.

We claim 1. In a harvester, the combination with the main frame, main wheel and platform conveyer, of a main driving-shaft behind and parallel with the axle of the main wheel, with which it has suitable driving connection, an

idler meshing with a gear on the inner-roller shaft of said conveyer, and a shaft connected with the driving and idler shafts by bevelgears all located in front of the rear sill of the frame, substantially as and for the purposes set forth.

2. In a harvester, the combination with the main frame, main wheel and conveyer and lower elevator belts, of a main driving-shaft behind and parallel with the axle of the main wheel with which it has a suitable driving connection, an idler meshing with a gear on the lower-roller shaft of said elevator-belt, and a shaft connected with the driving and idler shafts by bevel-gears, all located in front of the rear sill of the main frame, substantially as and for the purposes set forth.

3. In a harvester, the combination with the main wheel and conveyer and lower elevator belts, of a main driving-shaft behind and parallel with the axle of the main wheel with which it has a suitable driving connection, a spur-gear idler meshing on opposite sides with gears on the shafts of the inner conveyerroller and of the lower roller of the lowerelevator-belt respectively, and a shaft arranged lengthwise of the machine and connected with the main driving and idler shafts by gears, substantially as and for the purposes set forth.

l. In a harvester, the combination with the main wheel and conveyer and elevator belts, of a main driving-shaft located behind and parallel with the axle of the main wheel with which it is connected, and provided at one end with an internal gear, a shaft located between and parallel with the lower elevator and inner conveyer rollers and provided with an idler which meshes with gears on the shafts of said rollers, and a shaft arranged lengthwise of the machine and connected at one end with said idler-shaft by bevel-gears and provided at the other end with a gear or pinion which meshes with the internal gear on the driving-shaft, substantially as and for the purposes set forth.

5. In a harvester, the combination with the main frame, seat-support, main wheel and conveyer and lower elevator belts, of a driving-shaft arranged lengthwise of the machine in front of the rear sill of said frame and connected by a train of gears with the inner conveyer and lower elevator rollers, and a gearcase containing said gears and serving to fasten said seat-support to the rear sill of said frame, substantially as and for the purposes set forth.

In testimony that we claim the foregoing as our own we affix our signatures in presence of two witnesses.

HENRY F. ORANDALL. EDWARD J. BIRKETT.

WVitn esses:

CHAS. L. Goss, R. O. LIVESAY. 

